About Alex M. Mercado, MD

Board Certified Internal Medicine located in Flanders, NJ

Alex M. Mercado, MD, is honored to be the physician of choice for many men and women from in and around Flanders, New Jersey. After more than 20 years in practice as a board-certified internist, Dr. Mercado has amassed an impressive body of skills and accomplishments. That expertise has helped him build a thriving practice that changes lives for the better.

Dr. Mercado is currently in private practice as a Primary Care Partners affiliate. His practice is founded on a commitment to providing compassionate, individualized care in a welcoming and comfortable environment.

His office is conveniently located in the Flanders Professional Building on Route 206 in Flanders. The office is handicap accessible and is open six days a week, with some evening hours. Patients can find Dr. Mercado in the directory of most major health plans; he even accepts patients with Medicare.

Dr. Mercado began his education at New York University in New York City. After earning his undergraduate degree in biology in 1989, he went on to study medicine at the University of Medicine and Dentistry of New Jersey in Newark. His next step was a residency in internal medicine at the New York University Medical Center.

Among Dr. Mercado’s achievements are the Eagle Scout award, Phi Beta Kappa membership, and the New York University Founders’ Day Award. He has held leadership roles at Hackettstown Regional Medical Center for six years and is currently a member of the American Medical Association and the American College of Physicians.

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Alex M. Mercado, MD, Primary Care Partners Affiliate, Flanders, NJ; May 2013 – present

VP of a Primary Care Partners Internal Medicine patient care center with admitting privileges at Hackettstown Regional Medical Center and Morristown Memorial Hospital

Alex M. Mercado, MD, LLC, Flanders, NJ; February 2002 – April 2013

Managing member of a solo Internal Medicine practice with admitting privileges at Hackettstown Regional Medical Center and Morristown Memorial Hospital

Plaza Family Care, PC, Hackettstown, NJ; August 1996 – February 2002

Senior member of the Internal Medicine division, with offices in Hackettstown, Chester and Washington with admitting privileges at Hackettstown Community Hospital and Morristown Memorial Hospital.


New York University Medical Center, Internal Medicine Program, New York, NY; July 1993 – June 1996


University of Medicine and Dentistry of NJ – New Jersey Medical School, Newark, NJ; MD, June 1993

New York University, New York, NY; BA in Biology, cum laude, June 1989


Executive Committee, Hackettstown Regional Medical Center; April 2011 – March 2013

Medical Staff President, Hackettstown Regional Medical Center; April 2009 – March 2011

Medical Staff Vice President, Hackettstown Regional Medical Center; April 2007 – March 2009

Chairman, Department of Medicine, Hackettstown Regional Medical Center; April 2005 – March 2007

Executive Committee, Member at Large, Hackettstown Community Hospital; April 2003 – March 2005

Advisor, Venture Crew 1444 – Boy Scouts of America, Jersey City, NJ: September 2002 – Present


New Jersey and New York


National Board of Medical Examiners

American Board of Internal Medicine


Eagle Scout, 1985

Phi Beta Kappa, 1988

New York University’s Founder’s Day Award, 1989

NJMS Academic Excellence Scholarship, 1989 – 1993


Academy of Family Physicians, 1990 -1993

American College of Physicians, 1995 – present


Second Language: Fluent in Spanish

Interests: Mountain Biking, Backpacking, Billiards, Brazilian Jiu Jitsu, Filipino Martial Arts

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If you’re looking for a primary care physician who offers comprehensive care and customized treatment plans, contact the office to schedule an appointment right away. Online scheduling is available, making it easy to find a convenient appointment time.